National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Mostly Cloudy

43°F

6°C

Humidity 27%
Wind Speed NE 6 mph
Barometer 30.12 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 28 Feb 12:35 pm CST
Extended Forecast for

Chillicothe IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 45. East northeast wind around 9 mph, with gusts as high as 17 mph.

    High: 45 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. North wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 39. Northeast wind 6 to 9 mph, with gusts as high as 17 mph.

    High: 39 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 26. East wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 45. Southeast wind 6 to 10 mph, with gusts as high as 17 mph.

    High: 45 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Rain, mainly after midnight. Low around 37. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Chance Rain
    then Rain

  • Tuesday

    Tuesday: Rain. High near 49. Light and variable wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 39. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely. Cloudy, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Rain Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 45. East northeast wind around 9 mph, with gusts as high as 17 mph.
Tonight
Partly cloudy, with a low around 24. North wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 39. Northeast wind 6 to 9 mph, with gusts as high as 17 mph.
Sunday Night
Mostly cloudy, with a low around 26. East wind around 6 mph.
Monday
Mostly cloudy, with a high near 45. Southeast wind 6 to 10 mph, with gusts as high as 17 mph.
Monday Night
Rain, mainly after midnight. Low around 37. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 49. Light and variable wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 39. Chance of precipitation is 60%.
Wednesday
Rain likely. Cloudy, with a high near 58. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 63.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 49.
Friday
Rain likely. Mostly cloudy, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.92°N 89.52°W (Elev. 522 ft)
Last Update:
12:26 pm CST Feb 28, 2026
Forecast Valid:
12pm CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation